using System;
using System.IO;
using iTextSharp.text.rtf;
using iTextSharp.text;
/*
 * $Id: RtfProtectionSetting.cs,v 1.2 2008/05/13 11:25:50 psoares33 Exp $
 * 
 *
 * Copyright 2008 by Howard Shank
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the ?GNU LIBRARY GENERAL PUBLIC LICENSE?), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */

namespace iTextSharp.text.rtf.document {

    /**
    * The RtfProtectionSetting handles document protection elements 
    * 
    * @version $Id: RtfProtectionSetting.cs,v 1.2 2008/05/13 11:25:50 psoares33 Exp $
    * @author Howard Shank (hgshank@yahoo.com)
    * @since 2.1.1 
    */
    public class RtfProtectionSetting : RtfElement {
        /**
        * Constant for Form protection controlword
        * Mutually exclusive
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#REVPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#ANNOTPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#READPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] FORMPROT = DocWriter.GetISOBytes("\\formprot");
        /**
        * Constant for Revision protection controlword
        * Mutually exclusive
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#FORMPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#ANNOTPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#READPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] REVPROT = DocWriter.GetISOBytes("\\revprot");
        /**
        * Constant for Annotation/Comment protection controlword
        * Mutually exclusive
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#FORMPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#REVPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#READPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] ANNOTPROT = DocWriter.GetISOBytes("\\annotprot");
        /**
        * Constant for read only rotection controlword
        * Mutually exclusive - exception, can be combined with ANNOTPROT
        * for backwards compatibility
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#FORMPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#REVPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @see com.lowagie.text.rtf.document.RtfProtectionSetting#ANNOTPROT(com.lowagie.text.rtf.document.RtfProtectionSetting)
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] READPROT = DocWriter.GetISOBytes("\\readprot");
        
        /**
        * Constant for protlevel controlword
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] PROTLEVEL = DocWriter.GetISOBytes("\\protlevel");
        /**
        * Constant for enforceprot controlword
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] ENFORCEPROT = DocWriter.GetISOBytes("\\enforceprot");
        
        /**
        * Constant for enforceprot controlword.
        * Implemented in Microsoft Word 2007.
        * 
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        private static byte[] READONLYRECOMMENDED = DocWriter.GetISOBytes("\\readonlyrecommended");

        /**
        * Constructs a <code>RtfProtectionSetting</code> belonging to a RtfDocument
        * 
        * @param doc The <code>RtfDocument</code> this <code>RtfProtectionSetting</code> belongs to
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */
        public RtfProtectionSetting(RtfDocument doc) : base(doc) {
        }

        /**
        * Writes the RTF protection control words
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */    
        public override void WriteContent(Stream result) {
        }
        
        /**
        * Writes the RTF protection control words
        * @since 2.1.1
        * @author Howard Shank (hgshank@yahoo.com) 
        */    
        public virtual void WriteDefinition(Stream result) {
            if (document.GetDocumentSettings().IsDocumentProtected()) {
                switch (document.GetDocumentSettings().GetProtectionLevelRaw()) {
                case RtfProtection.LEVEL_FORMPROT:
                    result.Write(FORMPROT, 0, FORMPROT.Length);
                    break;
                case RtfProtection.LEVEL_ANNOTPROT:
                    result.Write(ANNOTPROT, 0, ANNOTPROT.Length);
                    break;
                case RtfProtection.LEVEL_REVPROT:
                    result.Write(REVPROT, 0, REVPROT.Length);
                    break;
                case RtfProtection.LEVEL_READPROT:
                    result.Write(ANNOTPROT, 0, ANNOTPROT.Length);
                    result.Write(READPROT, 0, READPROT.Length);
                    break;
                }
                result.Write(ENFORCEPROT, 0, ENFORCEPROT.Length);  // assumes one of the above protection keywords was output.
                result.WriteByte((byte)'1');
                result.Write(PROTLEVEL, 0, PROTLEVEL.Length);
                byte[] t;
                result.Write(t = document.GetDocumentSettings().GetProtectionLevelBytes(), 0, t.Length);
            }
            
            if (document.GetDocumentSettings().GetReadOnlyRecommended()) {
                result.Write(READONLYRECOMMENDED, 0, READONLYRECOMMENDED.Length);
                result.Write(DELIMITER, 0, DELIMITER.Length);
            }
        }
    }
}